Z90102 Просмотр технического описания (PDF) - Zilog

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Z90102

40-PIN LOW-COST DIGITAL TELEVISION CONTROLLER

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Z90102/90103/90104

40-Pin Low-Cost Digital Television Controller

Interrupts. The DTC has six different interrupts from six two sources are claimed by Port 3 (P30, P31), one by

different sources. These interrupts are maskable and pri- VSYNC, two by the counter/timers, and one is software

oritized (Figure 19). The six sources are divided as follows: triggered only.

1

IRQ

IRQ

IMR

6

Global

Interrupt

Enable

IPR

Interrupt

Request

Priority

Logic

Vector Select

Figure 19. Interrupt Block Diagram

DS97TEL1902

21

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